<template>
  <div class="cropper-content">
    <el-dialog
      title="裁切图片"
      v-if="cropperModel"
      :visible.sync="cropperModel"
      :close-on-click-modal="false"
      :close-on-press-escape="false"
      :modal-append-to-body="false"
      :append-to-body="true"
      width="600px"
      center
    >
      <div class="cropper-box">
        <div class="cropper">
          <vue-cropper
            style="height: 400px"
            ref="cropper"
            :img="optionData.img"
            :outputSize="option.outputSize"
            :outputType="optionData.outputType"
            :info="option.info"
            :canScale="option.canScale"
            :autoCrop="option.autoCrop"
            :autoCropWidth="autoCropWidth"
            :autoCropHeight="autoCropHeight"
            :fixed="fixed"
            :fixedNumber="option.fixedNumber"
            :full="option.full"
            :fixedBox="fixedBox"
            :canMove="option.canMove"
            :canMoveBox="option.canMoveBox"
            :original="option.original"
            :centerBox="option.centerBox"
            :height="500"
            :infoTrue="option.infoTrue"
            :maxImgSize="option.maxImgSize"
            :enlarge="option.enlarge"
            :mode="option.mode"
            @realTime="realTime"
            @imgLoad="imgLoad"
          >
          </vue-cropper>
        </div>
        <!--底部操作工具按钮-->
        <div class="footer-btn">
          <div class="scope-btn">
            <!-- <label class="btn" for="uploads">选择图片</label> -->
            <!-- <form action="/reformer-summoon/file/uploadImage"></form> -->
            <!-- <input
              type="file"
              id="uploads"
              ref="uploadFile2"
              action=""
              style="position: absolute; clip: rect(0 0 0 0)"
              accept="image/png, image/jpeg, image/gif, image/jpg"
              @change="selectImg($event)"
            /> -->
            <!-- <el-button
            size="mini"
            type="danger"
            plain
            icon="el-icon-zoom-in"
            @click="changeScale(1)"
            >放大</el-button
          >
          <el-button
            size="mini"
            type="danger"
            plain
            icon="el-icon-zoom-out"
            @click="changeScale(-1)"
            >缩小</el-button
          >
          <el-button size="mini" type="danger" plain @click="rotateLeft"
            >↺ 左旋转</el-button
          >
          <el-button size="mini" type="danger" plain @click="rotateRight"
            >↻ 右旋转</el-button
          > -->
          </div>
          <div class="upload-btn">
            <el-button size="mini" type="primary" @click="uploadImg('blob')"
              >确定</el-button
            >
          </div>
        </div>
      </div>
      <!--预览效果图-->
      <!-- <div class="show-preview">
      <div :style="previews.div" class="preview">
        <img :src="previews.url" :style="previews.img" />
      </div>
    </div> -->
    </el-dialog>
  </div>
</template>

<script>
import { VueCropper } from "vue-cropper";
import { uploadImg } from "@/api/common.js";
export default {
  name: "CropperImage",
  components: {
    VueCropper,
  },
  props: {
    autoCropWidth: {
      type: Number,
      default: 300,
    },
    autoCropHeight: {
      type: Number,
      default: 200,
    },
    fixed: {
      type: Boolean,
      default: false,
    },
    fixedBox: {
      type: Boolean,
      default: false,
    },
    Name: {
      type: String,
      default: "",
    },
    optionData: {
      default: "",
    },
  },
  // props:['Name'],
  data() {
    return {
      cropperModel: false,
      name: this.Name,
      previews: {},
      option: {
        img: "", //裁剪图片的地址
        outputSize: 1, //裁剪生成图片的质量(可选0.1 - 1)
        outputType: "png", //裁剪生成图片的格式
        info: true, //图片大小信息
        canScale: true, //图片是否允许滚轮缩放
        autoCrop: true, //是否默认生成截图框
        // autoCropWidth: 150,  //默认生成截图框宽度
        // autoCropHeight: 150, //默认生成截图框高度
        fixed: false, //是否开启截图框宽高固定比例
        // fixedNumber: [1, 1], //截图框的宽高比例
        full: false, //false按原比例裁切图片，不失真
        fixedBox: false, //固定截图框大小，不允许改变
        canMove: true, //上传图片是否可以移动
        canMoveBox: true, //截图框能否拖动
        original: false, //上传图片按照原始比例渲染
        centerBox: true, //截图框是否被限制在图片里面
        height: true, //是否按照设备的dpr 输出等比例图片
        infoTrue: false, //true为展示真实输出图片宽高，false展示看到的截图框宽高
        maxImgSize: 3000, //限制图片最大宽度和高度
        enlarge: 1, //图片根据截图框输出比例倍数
        // mode: '450px 300px'  //图片默认渲染方式
      },
    };
  },
  methods: {
    init() {
      this.cropperModel = true;
    },
    //初始化函数
    imgLoad(msg) {
      console.log("工具初始化函数=====" + msg);
    },
    //图片缩放
    changeScale(num) {
      num = num || 1;
      this.$refs.cropper.changeScale(num);
    },
    //向左旋转
    rotateLeft() {
      this.$refs.cropper.rotateLeft();
    },
    //向右旋转
    rotateRight() {
      this.$refs.cropper.rotateRight();
    },
    //实时预览函数
    realTime(data) {
      this.previews = data;
    },
    //选择图片
    selectImg(e) {
      let file = e.target.files[0];
      if (!/\.(jpg|jpeg|png|JPG|PNG)$/.test(e.target.value)) {
        this.$message({
          message: "图片类型要求：jpeg、jpg、png",
          type: "error",
        });
        return false;
      }
      //转化为blob
      let reader = new FileReader();
      reader.onload = (e) => {
        let data;
        if (typeof e.target.result === "object") {
          data = window.URL.createObjectURL(new Blob([e.target.result]));
        } else {
          data = e.target.result;
        }
        this.option.img = data;
        let parts = data.split(";");
        let info = parts[0].split(":");
        this.option.outputType = info[1].split("/")[1];
        console.log(this.option.outputType);
      };
      //转化为base64
      reader.readAsDataURL(file);
    },
    //上传图片
    uploadImg(type) {
      let _this = this;
      console.log();
      // this.$refs.cropper.getCropData(data => {
      //   _this.$emit('uploadImgSuccess', data);
      // })
      if (type === "blob") {
        //获取截图的blob数据
        this.$refs.cropper.getCropData(async (data) => {
          let formData = new FormData();
          let file = this.dataURLtoFile(data, `${new Date().getTime()}.png`);
          console.log(data);
          formData.append("file", file);
          console.log(formData, " -------");
          uploadImg(formData).then((res) => {
            console.log(res, "++++");
            this.cropperModel = false;
            _this.$emit("uploadImgSuccess", res.data);
          });
        });
      }
    },
    dataURLtoFile(dataurl, filename) {
      const arr = dataurl.split(",");
      const mime = arr[0].match(/:(.*?);/u)[1];
      const bstr = atob(arr[1]);
      let n = bstr.length;
      const u8arr = new Uint8Array(n);
      while (n--) {
        u8arr[n] = bstr.charCodeAt(n);
      }
      const blob = new Blob([u8arr], { type: mime });
      return new File([blob], filename, {
        type: mime,
        lastModified: new Date(),
      });
    },
  },
};
</script>

<style scoped lang="scss">
.cropper-content {
  display: flex;
  display: -webkit-flex;
  justify-content: flex-end;
  .cropper-box {
    flex: 1;
    width: 100%;
    // height: 400px;
    >>> .cropper {
      width: auto;
      height: 400px !important;
    }
  }

  .show-preview {
    flex: 1;
    -webkit-flex: 1;
    display: flex;
    display: -webkit-flex;
    justify-content: center;
    .preview {
      overflow: hidden;
      border: 1px solid #67c23a;
      background: #cccccc;
    }
  }
}
.footer-btn {
  margin-top: 30px;
  display: flex;
  display: -webkit-flex;
  justify-content: flex-end;
  .scope-btn {
    display: flex;
    display: -webkit-flex;
    justify-content: space-between;
    padding-right: 10px;
  }
  .upload-btn {
    flex: 1;
    -webkit-flex: 1;
    display: flex;
    display: -webkit-flex;
    justify-content: right;
  }
  .btn {
    outline: none;
    display: inline-block;
    line-height: 1;
    white-space: nowrap;
    cursor: pointer;
    -webkit-appearance: none;
    text-align: center;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    outline: 0;
    -webkit-transition: 0.1s;
    transition: 0.1s;
    font-weight: 500;
    padding: 8px 15px;
    font-size: 12px;
    border-radius: 3px;
    color: #fff;
    background-color: #409eff;
    border-color: #409eff;
    margin-right: 10px;
  }
}
</style>
